physiochemical behaviour of gases in solution

Question 1

formula for daltons law
with N2, H2 and O2 as example

Answer 1

p = pn2 + pnH2 + pO2

p=overall gas pressure
pN2 = partial pressure of N2
pH2=partial gas pressure of H2
pO2=partial gas pressure of O2

Question 2

what is vapour pressure

Answer 2

the pressure exerted by a vapour in thermodynamic equilibrium with its condensed phases

Question 3

what is raoults law formula

Answer 3

Pi=Pi* times Xi

the relationship between the partial vapour pressure of a component i in the vapour phase, Pi and the mole fraction of that component in solution Xi

Question 4

what does raoults law calculate

Answer 4

the vapour pressure from a knowledge of the composition of the solution